/Engine/Plugins/Bridge/Source/MegascansPlugin/Public/MSSettings.h
class UMaterialPresetsSettings : public [UObject](API\Runtime\CoreUObject\UObject\UObject)
TLazyObjectPtr<...
MasterMaterial3d
Replace default master material with your own custom master material for all 3D assets.
TLazyObjectPtr<...
MasterMaterialPlant
Replace default master material with your own custom master material for all 3D Plants.
TLazyObjectPtr<...
MasterMaterialSurface
Replace default master material with your own custom master material for all Surfaces.